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A well-insulated rigid tank contains 8 kg of a saturated liquid-vapor mixture of water at 100 kPa. Initially, three quarters of the mass is in the liquid phase. An electric resistance placed in the tank is now turned on and kept on until all the liquid in the tank is vaporized. Determine the entropy change of the steam during this process.
if the 1500-lb boom ab the 200-lb cage bcd and the 175-lb man have centers of gravity located at points g1 g2 and g3
a piston cylinder device initially contains steam at 200 kpa 200 degree c and 0.4 m3. at this state a linear spring is
Determine the smallest horizontal force required to pull out wedge A. The crate has a weight of 200 and the coefficient of static friction at all contacting surfaces is = 0.7. Neglect the weight of the wedge.
the lowest temperature that has been achieved is about 1 times 10-6 k. to achieve this an additional stage of cooling
an iron blok m1kg initialy held stationary is dropped form a 100 m height. it strikes the groud and is assumed to be
the centerboard of a sailboat is 2.5m long and has a chord of 1m. approximate the centerboard as a flat plate in water
calculate the force necessary to accelerate a 20 kg 400mm diameter sphere which is at rest under water at the rate of 5
a spring-mass-damper system is subjected to a harmonic force. the amplitude is found to be 20mm at resonance and 10mm
refrigerant 22 is used in the evaporator pipe of a commercial refrigeration unit. at steady state it flows at a rate of
the decarburization of a steel can be carried out by placing the steel in a vacuum i.e. the carbon concentration is
it is highly desirable to make benzene from ethane from shale gas in a continious vapor-phase reaction3c2h6 --gt c6h6
a window frame manufacturer is searching for ways to improve revenue from its triple- insulated sliding windows sold
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